T-Bills vs FGN Bonds in Nigeria: What Is the Difference and Which Should You Buy?

Nigeria's federal government borrows from citizens through two main instruments: Treasury Bills (T-bills) and Federal Government of Nigeria (FGN) Bonds. Both are issued by the Debt Management Office (DMO) and backed by the full faith and credit of the Nigerian state. But their structures, tenors, yields, and practical suitability differ considerably. Choosing the wrong one for your timeline can mean locking up funds for years longer than intended, or settling for a lower return than the market is offering at that moment.

This guide explains both instruments plainly, compares them on every practical dimension, and gives you the framework to decide which belongs in your naira savings strategy right now.

What Exactly Is the Difference Between T-Bills and FGN Bonds in Nigeria?

Treasury Bills are short-term debt instruments issued by the Central Bank of Nigeria (CBN) on behalf of the federal government. They carry tenors of 91 days, 182 days, or 364 days. T-bills are issued at a discount: you pay less than the face value at purchase, and receive the full face value at maturity. The difference is your return. The CBN conducts primary market auctions every fortnight, typically on Wednesdays.

At the CBN's primary market auction on 5 June 2026, the marginal stop rate on the 364-day T-bill settled at 23.50%, according to DMO auction results published on the CBN website. The 91-day bill cleared at 18.00% and the 182-day at 20.50%. These rates fluctuate auction-to-auction based on system liquidity and the volume of competitive bids submitted by institutional players and qualified retail investors.

FGN Bonds are medium-to-long-term debt instruments. Tenors typically range from 2 years to 30 years. Unlike T-bills, bonds pay a fixed coupon semi-annually — twice per year — throughout their life, and return principal at maturity. The DMO auctions FGN Bonds monthly, usually on the third Wednesday. As of the May 2026 DMO bond auction, the coupon on the re-opened 10-year FGN Bond (2036 maturity) was set at 19.30% per annum. The 5-year (2031 maturity) carried a coupon of 18.50%.

The structural split is therefore: T-bills give you a lump sum at maturity within a year; bonds give you recurring income twice a year over several years.

Which Pays Higher Returns: T-Bills or FGN Bonds?

The answer is not fixed. It depends on the shape of Nigeria's yield curve at any given time.

In a normal yield environment, longer tenors command higher yields to compensate for duration risk — the possibility that inflation or policy rates shift against you over time. Nigeria's yield curve spent much of 2024 and early 2025 in an inverted or flat state, with short-term T-bill rates exceeding long-term bond coupons, a consequence of the CBN's aggressive tightening cycle that lifted the Monetary Policy Rate (MPR) to 27.50% by mid-2024 before moderate easing began in 2025.

By June 2026, the curve has normalised partially. The 364-day T-bill at 23.50% still sits meaningfully above the 5-year bond coupon of 18.50%, but below the 19.30% available on the 10-year. This pattern rewards investors willing to extend duration beyond a decade, while short-term holders capture elevated rates ahead of any further MPR easing by the CBN's Monetary Policy Committee (MPC).

For context on inflation: the National Bureau of Statistics (NBS) reported headline inflation at 33.69% year-on-year for April 2026. Both T-bills and FGN Bonds currently offer negative real returns against headline CPI. The strategic question is not whether these instruments beat inflation in absolute terms today, but whether they limit the naira purchasing-power loss better than a savings account, money market fund, or idle cash.

How Do the Practical Details Compare?

| Dimension | T-Bills | FGN Bonds | |---|---|---| | Tenor | 91, 182, 364 days | 2–30 years (typically 5, 7, 10, 15, 30) | | Minimum bid (primary) | ₦50,000,000 (institutional) / ₦10,000 via FGN Savings Bond (retail) | ₦50,000,000 (primary) / ₦5,000 via FGN Savings Bond | | Return structure | Discount at purchase; face value at maturity | Fixed coupon paid every 6 months; principal at maturity | | Secondary market | Active via FMDQ Exchange | Active via FMDQ Exchange and NGX | | Tax treatment | Interest exempt from withholding tax per FIRS exemption | Interest exempt from withholding tax per FIRS exemption | | Issuer / Auction manager | CBN (on behalf of FGN) | DMO (direct) |

A practical clarification on access: retail investors who cannot meet the ₦50 million primary market threshold for T-bills can access the market through stockbrokers and FMDQ-licensed dealers on the secondary market, or through money market and fixed-income mutual funds regulated by the Securities and Exchange Commission (SEC Nigeria). The DMO's FGN Savings Bond programme, specifically designed for retail participation, carries a minimum of ₦5,000 and offers 2-year or 3-year tenors at rates set monthly.

Liquidity: Can You Exit Early?

Both instruments are tradeable on the secondary market before maturity. FMDQ Exchange provides the primary trading platform for fixed income securities in Nigeria. However, secondary market pricing means you may receive less than expected if you sell before maturity, particularly if market yields have risen since your purchase date — a dynamic known as duration risk.

T-bills, given their short tenors, carry far less duration risk. A 91-day bill bought today matures in three months regardless. An investor who needs funds in six months should not buy a 10-year bond expecting a clean exit at full value.

FGN Bonds suit those with a genuine long-term horizon: pension funds, endowments, and individuals building a fixed-income ladder who can tolerate mark-to-market fluctuations. The semi-annual coupon payments also provide periodic liquidity without requiring a sale of the principal position.

Which Should You Buy?

The decision turns on three variables: your time horizon, your income needs, and your view on the CBN rate cycle.

If your horizon is under 12 months and you need capital preservation with certainty, the 364-day T-bill at current rates is the cleaner instrument. No coupon reinvestment complexity, no duration exposure, full principal returned within a year.

If your horizon extends beyond three years and you want a predictable income stream — particularly if you believe the CBN will cut the MPR further through 2026 and 2027 — locking in a 10-year coupon above 19% makes a credible case. Falling rates will make your fixed coupon more valuable relative to new issuances.

For retail investors without access to primary market minimums, the DMO's monthly FGN Savings Bond remains the most accessible entry point. Rates for June 2026 were published at 17.00% for the 2-year tenor and 18.00% for the 3-year, per the DMO's official notice. These are lower than primary market equivalents but accessible from ₦5,000 and redeemable through commercial banks and stockbrokers.

You can find step-by-step instructions on purchasing T-bills through your bank or broker in our full guide to Treasury Bills in Nigeria.

Neither instrument removes inflation risk. Against April 2026 headline CPI of 33.69%, a 23.50% T-bill still produces a negative real return of roughly 10 percentage points. The honest case for both instruments is not inflation-beating returns — it is structured, government-backed naira savings that outperform idle deposits and provide liquidity options superior to real estate or physical assets.

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Regulatory note: FGN Bonds and Treasury Bills are regulated instruments issued and managed under the Debt Management Office Establishment (etc.) Act 2003 and the CBN Act 2007. Interest income on both instruments is exempt from withholding tax under current FIRS guidelines. Secondary market trading of these instruments on FMDQ Exchange and the Nigerian Exchange (NGX) is regulated by the Securities and Exchange Commission (SEC Nigeria). The Cowrie is an independent editorial publication. It does not hold a financial services licence, investment advisory licence, or any regulatory approval from the CBN, SEC Nigeria, or any other Nigerian financial regulator. Nothing published here constitutes investment advice. Readers should consult a qualified financial adviser or SEC-registered investment manager before making any investment decision.